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nata0808 [166]
3 years ago
9

Help me please!!!!!!!!!!!!!!!! (-7n^2-8n)+(-n^2+9n+9)

Mathematics
2 answers:
Sever21 [200]3 years ago
7 0
-9n^2+n+9 is the answer....
Setler [38]3 years ago
6 0
I combined like terms! I hoped this helps

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Find the next two terms of the following sequence: 14, 38, 74, 122, 182, 254...
Bezzdna [24]
Let's find the difference between each number.
38-14=24
74-38=36
122-74=48
182-122=60
254-182=72
As you can tell, you're adding 12 to each difference before. The next difference would be 72+12=84. Let's add.
254+84=338
Now the next difference would be 84+12=96.
338+96=434
So, the next two terms are 338 and 434.
5 0
3 years ago
Identify the radius of the circle whose equation is x^2 + y^2 = 36.
pantera1 [17]

Answer:

radius = 6

Step-by-step explanation:

The equation of a circle centred at the origin is

x² + y² = r² ←r is the radius

x² + y² = 36 ← is in this form

with r² = 36 ⇒ r = \sqrt{36} = 6

3 0
4 years ago
I need help with this .
vaieri [72.5K]
I would be glad to help you! I will solve through 3 to get you started.

This is a very important concept, so it would be helpful if you learn it on your own.

C= 2* pi* r

1. The radius is 5 cm. 5 cm represents r in the equation.
C= 2* 3.14 (or pi)* 5 
Multiply it by using a calculator. 
My answer was 31.4.

Let's try the second one.
2. The diameter is 9. Have of the diameter is the radius. 
9/2= 4.5 
Plug it into the equation.
C= 2*3.14*4.5
I got 28.26

One more. 
Plug it into the equation.
C= 2*3.14*5.6
35.17 was my answer.

Make sure to add the end signs to you answer, ft, cm, meter, etc.

Let me know if you need more help.

Brainliest answer is always appreciated.
7 0
3 years ago
I need help for number 5. Plz
iogann1982 [59]
5/3 each friend gets 3/5 of the trail mix
8 0
3 years ago
Read 2 more answers
Select the correct answer
Marta_Voda [28]

Answer:

c

Step-by-step explanation:

reason for is because when you add all the like terms you end up with c

6 0
3 years ago
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